Xfinity TVGo App not working

I have used the app since May 2014 with no problems until Friday, 1/23/2015. Since then, the video is no longer crisop, but is blurry and even pixelated, and content is delivered in segments of only a few seconds duration, with pauses in between.

This is not a hardware problem, since all other video apps (Amazon Prime, Netflix, YouTube, etc) are working perfeclly, or a network problem, since tablet is registering a strong signal, and the connection speed is between 13Mbps and 18Mbps.

Based on what I've seen on this site alone, thousands of people are registering this complaint.

When can we expect a fix, or at least an acknowledgement from Comcast that this problem exists and is being adressed?